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OsPerfState saves for all CPUs

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Carl Pearson
2019-09-26 10:58:01 -05:00
parent d576ac099d
commit 1b3cf604a8
4 changed files with 62 additions and 32 deletions
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README.md
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@@ -148,9 +148,9 @@ See [examples/os_perf.cpp](examples/os_perf.cpp).
#include "perfect/os_perf.hpp"
```
* `Result get_os_perf_state(OsPerfState *state, const int cpu)`: Save the current OS governor mode for CPU `cpu`.
* `Result get_os_perf_state(OsPerfState &state)`: Save the current OS governor mode for all CPUs.
* `Result os_perf_state_maximum(const int cpu)`: Set the OS governor to it's maximum performance mode.
* `Result set_os_perf_state(const int cpu, OsPerfState state)`: Restore a previously-saved OS governor mode.
* `Result set_os_perf_state(OsPerfState state)`: Restore a previously-saved OS governor mode.
### GPU Turbo
@@ -270,3 +270,7 @@ heap: 93824994414192
* [easyperf.net](https://easyperf.net/blog/2019/08/02/Perf-measurement-environment-on-Linux#2-disable-hyper-threading) blog post discussing ACPI/Intel turbo, SMT, Linux governor, CPU affinity, process priority, file system caches, and ASLR.
* [temci](https://github.com/parttimenerd/temci) benchmarking tool for cpu sheilding and disabling hyperthreading, among other things.
* [perflock](https://github.com/aclements/perflock) tool for locking CPU frequency scaling domains
## Acks
Uses [muellan/clipp](https://github.com/muellan/clipp) for cli option parsing.